[experiment] add alternative wasm sqlite3 implementation available via build-tag (#2863)

This allows for building GoToSocial with [SQLite transpiled to WASM](https://github.com/ncruces/go-sqlite3) and accessed through [Wazero](https://wazero.io/).

1 files changed, 0 insertions, 105 deletions

diff --git a/internal/db/bundb/errors.go b/internal/db/bundb/errors.go
deleted file mode 100644
index f2633786a..000000000
--- a/internal/db/bundb/errors.go
+++ /dev/null
@@ -1,105 +0,0 @@
-// GoToSocial
-// Copyright (C) GoToSocial Authors admin@gotosocial.org
-// SPDX-License-Identifier: AGPL-3.0-or-later
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package bundb
-
-import (
-	"database/sql/driver"
-	"errors"
-
-	"github.com/jackc/pgx/v5/pgconn"
-	"github.com/superseriousbusiness/gotosocial/internal/db"
-	"modernc.org/sqlite"
-	sqlite3 "modernc.org/sqlite/lib"
-)
-
-// errBusy is a sentinel error indicating
-// busy database (e.g. retry needed).
-var errBusy = errors.New("busy")
-
-// processPostgresError processes an error, replacing any postgres specific errors with our own error type
-func processPostgresError(err error) error {
-	// Catch nil errs.
-	if err == nil {
-		return nil
-	}
-
-	// Attempt to cast as postgres
-	pgErr, ok := err.(*pgconn.PgError)
-	if !ok {
-		return err
-	}
-
-	// Handle supplied error code:
-	// (https://www.postgresql.org/docs/10/errcodes-appendix.html)
-	switch pgErr.Code { //nolint
-	case "23505" /* unique_violation */ :
-		return db.ErrAlreadyExists
-	}
-
-	return err
-}
-
-// processSQLiteError processes an error, replacing any sqlite specific errors with our own error type
-func processSQLiteError(err error) error {
-	// Catch nil errs.
-	if err == nil {
-		return nil
-	}
-
-	// Attempt to cast as sqlite
-	sqliteErr, ok := err.(*sqlite.Error)
-	if !ok {
-		return err
-	}
-
-	// Handle supplied error code:
-	switch sqliteErr.Code() {
-	case sqlite3.SQLITE_CONSTRAINT_UNIQUE,
-		sqlite3.SQLITE_CONSTRAINT_PRIMARYKEY:
-		return db.ErrAlreadyExists
-	case sqlite3.SQLITE_BUSY,
-		sqlite3.SQLITE_BUSY_SNAPSHOT,
-		sqlite3.SQLITE_BUSY_RECOVERY:
-		return errBusy
-	case sqlite3.SQLITE_BUSY_TIMEOUT:
-		return db.ErrBusyTimeout
-
-	// WORKAROUND:
-	// text copied from matrix dev chat:
-	//
-	// okay i've found a workaround for now. so between
-	// v1.29.0 and v1.29.2 (modernc.org/sqlite) is that
-	// slightly tweaked interruptOnDone() behaviour, which
-	// causes interrupt to (imo, correctly) get called when
-	// a context is cancelled to cancel the running query. the
-	// issue is that every single query after that point seems
-	// to still then return interrupted. so as you thought,
-	// maybe that query count isn't being decremented. i don't
-	// think it's our code, but i haven't ruled it out yet.
-	//
-	// the workaround for now is adding to our sqlite error
-	// processor to replace an SQLITE_INTERRUPTED code with
-	// driver.ErrBadConn, which hints to the golang sql package
-	// that the conn needs to be closed and a new one opened
-	//
-	case sqlite3.SQLITE_INTERRUPT:
-		return driver.ErrBadConn
-	}
-
-	return err
-}